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EP2243178A1 - Battery comprising a plurality of individual cells - Google Patents

Battery comprising a plurality of individual cells

Info

Publication number
EP2243178A1
EP2243178A1 EP09713075A EP09713075A EP2243178A1 EP 2243178 A1 EP2243178 A1 EP 2243178A1 EP 09713075 A EP09713075 A EP 09713075A EP 09713075 A EP09713075 A EP 09713075A EP 2243178 A1 EP2243178 A1 EP 2243178A1
Authority
EP
European Patent Office
Prior art keywords
battery
cell
cell housing
housing side
side walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09713075A
Other languages
German (de)
French (fr)
Other versions
EP2243178B1 (en
Inventor
Jens Meintschel
Dirk Schröter
Wolfgang Warthmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP2243178A1 publication Critical patent/EP2243178A1/en
Application granted granted Critical
Publication of EP2243178B1 publication Critical patent/EP2243178B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a battery having a plurality of individual cells according to the preamble of claim 1.
  • high-voltage batteries z.
  • lithium-ion batteries known for vehicle applications, which are constructed in particular of several electrically connected in series and / or parallel single cells.
  • a housing of the individual cells poles can be electrically connected by means of cell connectors, wherein at the cell connectors connecting contacts for monitoring functions, eg. B. Zeilwoodsüberwachung provided.
  • bipolar single cells in which a positive and a negative pole are placed directly on mutually electrically insulated parts of the housing, the electrical contacts forming parts of the housing directly connected positively and / or non-positively.
  • measuring terminals for example for cell voltage monitoring or for line voltage compensation.
  • the invention is therefore based on the object to provide an improved battery, which overcomes in particular the disadvantages indicated in the prior art and is simple and inexpensive to produce.
  • the battery according to the invention with a plurality of individual cells, the poles of which are electrically connected in parallel and / or in series with one another and form a cell network, the respective individual cell being surrounded by a cell housing formed from two cell housing side walls and a cell housing frame (2.3) in that at least one of the poles of a respective single cell has two voltage connection contacts.
  • B. high or low voltage terminal contacts also called HV or NV contacts
  • the different voltage connection contacts are electrically interconnected inside the cell, in particular connected in parallel.
  • one of the electrically conductive metallic cell housing side walls is used.
  • a first voltage connection contact forms one of the poles of the single cell and the second voltage connection contact forms a measurement connection.
  • the poles of the single cell in a simple and space-saving manner are formed by the electrically conductive, in particular metallic cell housing side walls, the pole contacts of different polarity of the respective single cell are placed directly on the mutually electrically insulated cell housing side walls.
  • the various voltage connection contacts can be arranged independently of each other at any desired location.
  • the voltage terminal contact forming the pole is one of the cell housing sidewalls.
  • the other designed as a measuring terminal voltage terminal contact is designed as a flag-like extension and is radially in an arbitrary direction from the respective cell housing side wall.
  • the poles of different individual cells are electrically connected to one another by contacting the cell housing side walls of the individual cells.
  • the individual cells or flat cells are contacted with each other in the axial direction.
  • the cell housing side wall provided with two voltage connection contacts of each individual cell has a measuring connection as a voltage connection contact.
  • the measuring connection is designed as a tab-like extension protruding from the cell housing side wall, which is electrically connected to an electronic component, in particular an encapsulated electronic component.
  • the electronic component preferably has facilities for a cell voltage monitoring and a cell voltage compensation, so that always a same voltage level of the individual cells and thus a higher reliability of the battery are ensured.
  • the individual cells and / or the poles of different individual cells are non-positively, positively and / or cohesively connected to each other. As a result, a permanent electrical contact between the poles of the individual cells is ensured in a simple manner.
  • the individual cells are formed from an electrode stack arranged in a cell housing, wherein at least electrodes of different polarity are separated from one another by a separator, preferably a separator foil, from one another.
  • a separator preferably a separator foil
  • an edge region of the respective electrode foil guided to the outside of the electrode stack forms a pole contact designed as a current drain plume, as a result of which an expensive contacting of electrode foil and pole contact is dispensed with.
  • this type of contacting is very safe against at least many, especially external influences such as shock or vibration.
  • an additional insulating arrangement can be advantageously saved. Furthermore, the handling of the single cell is made easier or safer.
  • pole contacts Stromabieiterfahen
  • cell housing side wall cell outer wall
  • a flat side of the cell housing in particular a flat cell
  • electrically connected so that the cell housing side walls form the electrical poles of the single cell.
  • At least one respective electrical connection element is arranged on a cell housing side wall of a first individual cell and a cell housing side wall of a last individual cell of the cell assembly, so that a simple electrical contacting of the battery is possible.
  • the cell housing frame on two electrically isolated from each other and spaced-apart material withdrawals, in which the formed as Stromabieiterfahen pole contacts are each arranged a polarity.
  • the measured in the direction of stacking the electrode sheets clear height of a material withdrawal is less than or equal to the corresponding extent of the uninfluenced stacked pole contacts and their measured parallel to the flat side of an electrode film depth greater than or equal to the corresponding extent of the associated pole contacts.
  • the pole contacts are securely held in the material returns and can be pressed electrically conductive in particular tight connection between the cell housing frame and the cell housing side walls.
  • a heat-conducting plate is provided for cooling the battery.
  • a heat-conductive material is introduced between the heat-conducting plate and the cell composite, which is preferably formed from a potting compound, a lacquer and / or a heat-conducting foil. This leads to an increase in the heat transfer between the cell composite and the heat conducting plate and thus increases on the one hand the performance and on the other hand the life of the battery.
  • At least the cell assembly and the heat-conducting plate are arranged in a housing frame, which is in particular formed as at least one tensioning element, in particular a tensioning band or a tensioning frame, completely surrounding the cell assembly and the heat-conducting plate.
  • a housing frame which is in particular formed as at least one tensioning element, in particular a tensioning band or a tensioning frame, completely surrounding the cell assembly and the heat-conducting plate.
  • FIG. 1 is a schematic perspective view of a single cell
  • FIG. 2 is a schematic sectional view of the single cell according to FIG. 1, FIG.
  • FIG. 5 is a schematic exploded view of a battery
  • Fig. 6 schematically shows a perspective view of the battery according to Figure 5
  • FIG. 7 is a schematic sectional view of the battery according to FIG. 6.
  • FIG. 1 and FIG. 2 show a single cell 1 designed as a flat cell.
  • a cell housing 2 of the individual cell 1 is formed from two cell housing side walls 2.1, 2.2 and an interposed cell housing frame 2.3 arranged at the edge.
  • the cell housing side walls 2.1, 2.2 of the single cell 1 are designed to be electrically conductive and form poles P +, P- of the single cell 1.
  • the cell housing frame 2.3 is made electrically insulating, so that the cell housing side walls 2.1, 2.2 of different polarity are electrically isolated from each other.
  • the cell housing frame 2.3 additionally has on a top side a partial increase in material 2.31, the function of which will be explained in greater detail in the description of FIGS.
  • the individual cell 1 has at least three voltage connection contacts K1 to K3.
  • the cell housing side wall 2.1 which forms the pole P, has at least two voltage connection contacts K1, K2 which, in particular, are electrically interconnected inside the cell, in particular in parallel.
  • the first voltage connection contact K1 is formed by the pole P of the individual cell 1 and thus the cell housing side wall 2.1.
  • the second voltage connection contact K2 is designed as a measuring connection 2.11, which protrudes radially beyond the cell housing side wall 2.1 at an arbitrary position, beyond the individual cell 1 as a flag-like extension.
  • a battery B shown in greater detail in FIGS. 5 to 7 consists of a plurality of such individual cells 1, whose poles P +, P-, in particular the cell housing side walls 2.1, 2.2 designed as flat sides, in parallel and / or in series depending on a desired battery voltage and power interconnected and form a cell group Z shown in Figures 5 to 7.
  • FIG. 2 shows in a sectional view of the single cell 1 according to FIG. 1 an advantageous embodiment of the invention, wherein an electrode stack 4 is arranged in the cell housing 2.
  • electrode foils 5 of different polarity in particular aluminum and / or copper foils and / or foils of a metal alloy, are stacked on top of one another and electrically insulated from one another by means of a separator 6, in particular a separator foil.
  • electrode films 5 of the same polarity are electrically connected together.
  • the interconnected ends of the electrode films 5 of the same polarity thus form a pole contact 7, which is also referred to as Stromabieiterfahne.
  • the pole contacts 7 different polarity of the single cell 1 will be further to better clarity than Stromabieiterfahen 7 referred.
  • the ends of the electrode films 5 are electrically conductively pressed together and / or welded and form the Stromabieiterfahen 7 of the electrode stack 4th
  • the electrode stack 4 is arranged in the cell housing frame 2.3 surrounding the electrode stack 4 at the edge.
  • the cell housing frame 2.3 has two spaced-apart material returns 2.33, 2.34, which are designed so that the Stromabieiterfahen 7 different polarity in the material returns 2.33, 2.34 are arranged.
  • the clear height h of the material returns 2.33, 2.34 is designed so that it corresponds to the extent of the unaffected stacked Stromabieiterfahen 7 or less than this.
  • the depth t of the material returns 2.33, 2.34 corresponds to the extent of Stromabieiterfahen 7 or is designed to be larger than this.
  • the cell housing frame 2.3 is preferably made of an electrically insulating material, the Stromabieiterfahen 7 different polarity are electrically isolated from each other, so that additional arrangements for electrical insulation are not necessary in an advantageous manner.
  • a film not shown, which z. B. made of nickel may be arranged to achieve an improved electrical connection between the Stromabieiterfahnen 7 and the cell housing side walls 2.1, 2.2.
  • an electrically insulating film not shown in detail between the Stromabieiterfahen 7 and the cell housing side walls 2.1, 2.2 and the Zellgeophusecetin 2.1, 2.2 on one side with an electrically insulating layer, so that an electric Contacting the Stromabieiterfahen 7 with the cell housing side walls 2.1, 2.2 only at a not further running, known from the prior art through-welding process from the outside through the cell housing side walls 2.1, 2.2 is formed.
  • FIG. 3 shows an exploded view of the single cell 1 explained in greater detail in FIGS. 1 to 2 and in particular shows the arrangement of the electrode stack 4 in the cell housing frame 2. 3 and the cell housing side walls 2. 1, 2.
  • the cell housing side wall 2.1 is bent with the flag-like measuring connection 2.11 in a lower region by 90 ° in the direction of the cell housing frame 2.3, so that when using a heat conducting plate 8 shown in Figures 5 to 7, an enlargement of an effective heat transfer surface and Thus, an improved cooling of the battery B can be achieved.
  • FIG. 4 shows a circuit diagram of the cell-internal electrical connection according to the invention of the voltage connection contacts K1 and K2 of the one pole P- and thus of the cell housing side wall 2.1.
  • the poles P of the individual cells 1 each have two voltage connection contacts K1 and K2, wherein the voltage connection contact K1 forms the pole P- and the voltage Terminal contact K2 forms the measuring terminal 2.11, to which at least one electronic component 13 can be connected.
  • the electronic component 13 a device 13.1 for line voltage monitoring, z. B. a voltmeter, and means 13.2 for cell voltage compensation, z. B. a switchable resistor for discharging the Einzellen with the highest voltage include.
  • the two voltage connection contacts K1, K2 are connected in parallel within the cell.
  • FIG. 5 shows an exploded view of a battery B with a cell network Z formed from a plurality of individual cells 1.
  • the poles P +, P- of several individual cells 1 are connected in series and / or in parallel as a function of a desired electrical voltage and power of the battery B. electrically interconnected.
  • the cell assembly Z may be formed in developments of the invention of any number of single cells 1.
  • the illustrated in Figures 4 and 5 serial electrical shading of the poles P +, P- of the individual cells 1 is by the electrical contacting of the
  • Cell housing side walls 2.1, 2.2 realized by adjacent individual cells 1 with different electrical potential.
  • the cell housing side wall 2.2 of one of the individual cells 1 is connected in a force-locking, positive-locking and / or material-locking manner with the cell housing side wall 2.1 to the flag-like measuring connection 2.11 of an adjacent individual cell 1.
  • the battery B which is used for example in a vehicle, in particular a hybrid and / or electric vehicle, is shown in an exploded view, a perspective view and as a sectional drawing.
  • the battery B is formed in the illustrated embodiment of the invention of thirty individual cells 1, which are electrically connected in series with each other.
  • an electrical connection element 9 is arranged on the cell housing side wall 2.2 of the first single cell E1 of the cell network Z, which in particular forms the positive pole P + of the first single cell E1.
  • This connection element 9 is designed as an electrical terminal lug and forms the positive pole terminal P pos of the battery B.
  • connection element 10 is arranged on the cell housing side wall 2.1 of the last single cell E2 of the cell network Z, which forms in particular the negative pole P- of the last single cell E2.
  • This connection element 10 is likewise embodied as an electrical connection lug and forms the negative pole connection P neg of the battery B.
  • the cell composite Z is thermally coupled to the heat conducting plate 8.
  • the cell housing side walls 2.1 are thermally coupled to the heat conducting plate 8 directly or indirectly via a thermally conductive material, in particular a heat conducting foil 11, with the lower area bent by 90 ° in the direction of the cell housing frame 2.3, so that an effective cooling of the battery B is achieved.
  • the thermally conductive material may additionally or alternatively be formed from a potting compound and / or a lacquer.
  • the heat conducting plate 8 and the heat-conducting film 11 are arranged in a housing frame.
  • This housing frame is in particular one or more of the cell composite Z completely enclosing clamping elements 12, z. As clamping bands formed, which connect the individual cells 1 and the cell composite Z, the heat conducting plate 8 and the heat-conducting film 11 in both the horizontal and vertical direction non-positively.
  • some or all components, d. H. the single cells 1, the heat conduction plate 8, the heat conducting foil 11 or the entire battery B may be installed partially or completely encapsulated alternatively or additionally in a battery housing.
  • the battery B for example, a lithium-ion high-voltage battery
  • an electronic component 13 which includes at least not shown devices for cell voltage monitoring and / or to a cell voltage compensation.
  • the electronic component 13 may be formed in a continuation of the invention as encapsulated electronic assembly.
  • the electronic component 13 is arranged at the head end on the cell assembly on the clamping elements 12 and the cell housing frame 2.3 of the individual cells 1.
  • a fixation of the clamping elements 12 at the top of the cell assembly Z is at the top of the frame 2.3 of each individual cell 1 partially formed the material increase 2.31, whose height corresponds in particular to the thickness of the clamping element 12.
  • the tab-like measuring terminals 2.11 arranged on the cell housing side walls 2.1 are guided by contact elements 13.3 arranged in the electronic component 13, which have a shape corresponding to the flag-like measuring terminals 2.11.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to a battery (B) comprising a plurality of individual cells (1) the poles (P) of which are electrically interconnected in parallel and/or in series and define a cell assembly (Z). The battery according to the invention is characterized in that a sealing element (3) is arranged in at least one edge zone between the poles (P) of adjacent individual cells (1).

Description

Daimler AG Daimler AG
Batterie mit mehreren EinzelzellenBattery with several single cells
Die Erfindung betrifft eine Batterie mit mehreren Einzelzellen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a battery having a plurality of individual cells according to the preamble of claim 1.
Nach dem Stand der Technik sind Hochvolt-Batterien, z. B. Lithium-Ionen-Batterien, für Fahrzeuganwendungen bekannt, die insbesondere aus mehreren elektrisch in Reihe und/oder parallel verschalteten Einzelzellen aufgebaut sind. Dabei können zum einen aus einem Gehäuse der Einzelzellen herausgeführte Pole mittels Zellverbindern elektrisch verbunden sein, wobei an den Zellverbindern Anschlusskontakte für Überwachungsfunktionen, z. B. Zeilspannungsüberwachung, vorgesehen sind. Zum anderen sind bei bipolaren Einzelzellen, bei welchen ein Plus- und ein Minuspol direkt auf gegeneinander elektrisch isolierte Teile des Gehäuses gelegt sind, die elektrischen Kontakte bildenden Teile des Gehäuses direkt form- und/oder kraftschlüssig miteinander verbunden. Bei einer Verwendung dieser kraftschlüssigen Verbindung besteht keine Anschlussmöglichkeit für Messanschlüsse beispielsweise zur Zellspannungsüberwachung oder zum Zeilspannungsausgleich.According to the prior art are high-voltage batteries, z. As lithium-ion batteries, known for vehicle applications, which are constructed in particular of several electrically connected in series and / or parallel single cells. In this case, on the one hand led out of a housing of the individual cells poles can be electrically connected by means of cell connectors, wherein at the cell connectors connecting contacts for monitoring functions, eg. B. Zeilspannungsüberwachung provided. On the other hand, in bipolar single cells, in which a positive and a negative pole are placed directly on mutually electrically insulated parts of the housing, the electrical contacts forming parts of the housing directly connected positively and / or non-positively. When using this non-positive connection, there is no possibility to connect measuring terminals, for example for cell voltage monitoring or for line voltage compensation.
Der Erfindung liegt daher die Aufgabe zugrunde, eine verbesserte Batterie anzugeben, welche insbesondere die im Stand der Technik angegebenen Nachteile überwindet und einfach und kostengünstig herstellbar ist.The invention is therefore based on the object to provide an improved battery, which overcomes in particular the disadvantages indicated in the prior art and is simple and inexpensive to produce.
Die Aufgabe wird erfindungsgemäß mit einer Batterie gelöst, welche die im Anspruch 1 angegebenen Merkmale aufweist.The object is achieved with a battery having the features specified in claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Die erfindungsgemäße Batterie mit mehreren Einzelzellen, deren Pole elektrisch parallel und/oder seriell miteinander verschaltet sind und einen Zellverbund bilden, wobei die jeweilige Einzelzelle von einem aus zwei Zellgehäuseseitenwände und einem Zellgehäuserahmen (2.3) gebildeten Zellgehäuse umgeben ist, zeichnet sich dadurch aus, dass zumindest einer der Pole einer jeweiligen Einzelzelle zwei Spannungs- Anschlusskontakte aufweist. Hierdurch ist eine bauraum- und funktionsoptimierte Anordnung von Anschlüssen, insbesondere von unterschiedlichen Spannungs- Anschlusskontakten, wie z. B. Hoch- oder Niederspannungs-Anschlusskontakten (auch HV- oder NV-Kontakte genannt), ermöglicht.The battery according to the invention with a plurality of individual cells, the poles of which are electrically connected in parallel and / or in series with one another and form a cell network, the respective individual cell being surrounded by a cell housing formed from two cell housing side walls and a cell housing frame (2.3) in that at least one of the poles of a respective single cell has two voltage connection contacts. As a result, a space-and function-optimized arrangement of terminals, in particular of different voltage connection contacts, such. B. high or low voltage terminal contacts (also called HV or NV contacts) allows.
Zweckmäßigerweise sind dabei die verschiedenen Spannungs-Anschlusskontakte zellintern elektrisch miteinander verschaltet, insbesondere parallel geschaltet. Hierzu wird insbesondere eine der elektrisch leitfähigen metallischen Zellgehäuseseitenwände verwendet. Hierdurch sind keine zusätzlichen Verbindungselemente, wie herkömmliche Zellverbinder, erforderlich. Damit wird eine Vereinfachung der Montage der Batterie und somit eine Kostenersparnis erreicht.Expediently, the different voltage connection contacts are electrically interconnected inside the cell, in particular connected in parallel. For this purpose, in particular one of the electrically conductive metallic cell housing side walls is used. As a result, no additional connecting elements, such as conventional cell connectors required. Thus, a simplification of the installation of the battery and thus a cost savings is achieved.
In einer möglichen Ausführungsform bildet ein erster Spannungs-Anschlusskontakt einen der Pole der Einzelzelle und der zweite Spannungs-Anschlusskontakt einen Messanschluss. Dabei sind die Pole der Einzelzelle in einfacher und Bauraum sparender Art und Weise durch die elektrisch leitfähigen, insbesondere metallischen Zellgehäuseseitenwände gebildet, wobei die Polkontakte unterschiedlicher Polarität der jeweiligen Einzelzelle direkt auf die gegeneinander elektrisch isolierte Zellgehäuseseitenwände gelegt sind.In one possible embodiment, a first voltage connection contact forms one of the poles of the single cell and the second voltage connection contact forms a measurement connection. The poles of the single cell in a simple and space-saving manner are formed by the electrically conductive, in particular metallic cell housing side walls, the pole contacts of different polarity of the respective single cell are placed directly on the mutually electrically insulated cell housing side walls.
In einer weiteren Ausführungsform sind die verschiedenen Spannungs- Anschlusskontakte unabhängig voneinander an beliebiger Stelle anordbar. In einer möglichen Ausführungsform ist der den Pol bildende Spannungs-Anschlusskontakt eine der Zellgehäuseseitenwände. Der andere als Messanschluss ausgebildete Spannungs- Anschlusskontakt ist als fahnenartige Verlängerung ausgeführt und steht radial in eine beliebige Richtung von der betreffenden Zellgehäuseseitenwand ab. Durch derartige, unter Verwendung einer einzigen Zellgehäuseseitenwand gebildete unterschiedliche Spannungs-Anschlusskontakte können diese optimal an Spannung und Strom sowie an deren Funktionen angepasst werden.In a further embodiment, the various voltage connection contacts can be arranged independently of each other at any desired location. In one possible embodiment, the voltage terminal contact forming the pole is one of the cell housing sidewalls. The other designed as a measuring terminal voltage terminal contact is designed as a flag-like extension and is radially in an arbitrary direction from the respective cell housing side wall. By means of such, different voltage connection contacts formed using a single cell housing side wall, these can be optimally adapted to voltage and current as well as their functions.
Zweckmäßigerweise sind die Pole verschiedener Einzelzellen durch Kontaktierung der Zellgehäuseseitenwände der Einzelzellen miteinander elektrisch verschaltet. Insbesondere in einem aus Flachzellen gebildeten Zellverbund sind die Einzelzellen oder Flachzellen in axialer Richtung miteinander kontaktiert. Dies stellt einen besonders kompakten, Bauraum sparenden Aufbau dar. In bevorzugter Weise weist die mit zwei Spannungs-Anschlusskontakten versehene Zellgehäuseseitenwand einer jeden Einzelzelle als einen Spannungs-Anschlusskontakt einen Messanschluss auf. Zweckmäßigerweise ist der Messanschluss als eine von der Zellgehäuseseitenwand abstehende, fahnenartige Verlängerung ausgeführt, die elektrisch mit einem elektronischen Bauelement, insbesondere einer gekapselten elektronischen Baueinheit, verbunden ist. Das elektronische Bauelement verfügt vorzugsweise über Einrichtungen zu einer Zellspannungsüberwachung und einem Zeilspannungsausgleich, so dass stets ein gleiches Spannungsniveau der Einzelzellen und somit eine höhere Zuverlässigkeit der Batterie sichergestellt sind.Conveniently, the poles of different individual cells are electrically connected to one another by contacting the cell housing side walls of the individual cells. In particular, in a cell composite formed from flat cells, the individual cells or flat cells are contacted with each other in the axial direction. This represents a particularly compact, space-saving design. In a preferred manner, the cell housing side wall provided with two voltage connection contacts of each individual cell has a measuring connection as a voltage connection contact. Expediently, the measuring connection is designed as a tab-like extension protruding from the cell housing side wall, which is electrically connected to an electronic component, in particular an encapsulated electronic component. The electronic component preferably has facilities for a cell voltage monitoring and a cell voltage compensation, so that always a same voltage level of the individual cells and thus a higher reliability of the battery are ensured.
In einer weiteren Ausgestaltung der Erfindung sind die Einzelzellen und/oder die Pole verschiedener Einzelzellen kraftschlüssig, formschlüssig und/oder stoffschlüssig miteinander verbunden. Dadurch wird in einfacher Art und Weise ein dauerhafter elektrischer Kontakt zwischen den Polen der Einzelzellen sichergestellt.In a further embodiment of the invention, the individual cells and / or the poles of different individual cells are non-positively, positively and / or cohesively connected to each other. As a result, a permanent electrical contact between the poles of the individual cells is ensured in a simple manner.
Zusätzlich sind die Einzelzellen aus einem in einem Zellgehäuse angeordneten Elektrodenstapel gebildet, wobei zumindest Elektroden unterschiedlicher Polarität durch einen Separator, vorzugsweise eine Separatorfolie, voneinander isolierend getrennt sind. In besonderer Weise bildet ein nach außerhalb des Elektrodenstapels geführter Randbereich der jeweiligen Elektrodenfolie einen als Stromabieiterfahne ausgebildeten Polkontakt, wodurch eine aufwändige Kontaktierung von Elektrodenfolie und Polkontakt entfällt. Gleichzeitig ist diese Art der Kontaktierung sehr sicher gegen zumindest viele, insbesondere äußere Einflüsse wie Stöße oder Vibrationen.In addition, the individual cells are formed from an electrode stack arranged in a cell housing, wherein at least electrodes of different polarity are separated from one another by a separator, preferably a separator foil, from one another. In a special way, an edge region of the respective electrode foil guided to the outside of the electrode stack forms a pole contact designed as a current drain plume, as a result of which an expensive contacting of electrode foil and pole contact is dispensed with. At the same time, this type of contacting is very safe against at least many, especially external influences such as shock or vibration.
Stromabieiterfahnen, d.h. die Polkontakte, gleicher Polarität sind elektrisch leitend miteinander zu einem Pol verbunden. Ferner sind die Polkontakte eines Pols elektrisch leitend miteinander verpresst und/oder verschweißt.Stromabieiterfahnen, i. the pole contacts, the same polarity are electrically conductively connected together to form a pole. Furthermore, the pole contacts of a pole are electrically conductively pressed together and / or welded.
Durch eine Anordnung des Elektrodenstapels in einem randseitig umlaufenden, insbesondere elektrisch isolierenden Zellgehäuserahmen kann in vorteilhafter Weise eine zusätzliche isolierende Anordnung eingespart werden. Weiterhin ist die Handhabbarkeit der Einzelzelle erleichtert bzw. sicherer gestaltet.By arranging the electrode stack in a peripheral, in particular electrically insulating cell housing frame, an additional insulating arrangement can be advantageously saved. Furthermore, the handling of the single cell is made easier or safer.
In besonderer Weise erfolgt, insbesondere bei bipolaren Einzelzellen, die Kontaktierung der Polkontakte direkt zu den einander gegenüberliegenden Zellgehäuseseitenwänden, insbesondere Flachseiten des Zellgehäuses. Diese Zellgehäuseseitenwände, insbesondere Flachseiten sind mittels des Zellgehäuserahmens gegeneinander elektrisch isoliert. Auf diese Weise werden Polkontakte (= Stromabieiterfahnen) gleicher Polarität direkt mit einer Zellgehäuseseitenwand (= Zellaußenwand), vorzugsweise einer Flachseite des Zellgehäuses, insbesondere einer Flachzelle, elektrisch verbunden, so dass die Zellgehäuseseitenwände die elektrischen Pole der Einzelzelle bilden. Auch liegt keine Schwächung der Druckdichtigkeit des Zellgehäuses der Einzelzelle vor, da keine Kontaktdurchführung der Pole erfolgt. Hiermit ist auch eine Verbesserung der Dichtigkeit des Inneren des Zellengehäuses gegenüber einem Durchtritt an Feuchtigkeit verbunden.In a special way, especially in bipolar single cells, the contacting of the pole contacts directly to the opposite cell housing side walls, in particular flat sides of the cell housing. These cell housing side walls, in particular flat sides, are mutually electric by means of the cell housing frame isolated. In this way, pole contacts (= Stromabieiterfahnen) have the same polarity directly with a cell housing side wall (= cell outer wall), preferably a flat side of the cell housing, in particular a flat cell, electrically connected so that the cell housing side walls form the electrical poles of the single cell. There is also no weakening of the pressure-tightness of the cell housing of the single cell, since there is no contact feedthrough of the poles. This is also associated with an improvement in the tightness of the interior of the cell housing from passage of moisture.
Gemäß einer sinnvollen Weiterführung der Erfindung ist an einer Zellgehäuseseitenwand einer ersten Einzelzelle und einer Zellgehäuseseitenwand einer letzten Einzelzelle des Zellverbundes zumindest jeweils ein elektrisches Anschlusselement angeordnet, so dass eine einfache elektrische Kontaktierung der Batterie möglich ist.According to a meaningful continuation of the invention, at least one respective electrical connection element is arranged on a cell housing side wall of a first individual cell and a cell housing side wall of a last individual cell of the cell assembly, so that a simple electrical contacting of the battery is possible.
In einer Ausgestaltung der Erfindung weist der Zellgehäuserahmen zwei elektrisch voneinander isolierte und voneinander beabstandete Materialrücknahmen auf, in denen die als Stromabieiterfahnen ausgebildeten Polkontakte jeweils einer Polarität angeordnet sind. In sinnvoller Weise ist die in Richtung der Stapelung der Elektrodenfolien gemessene lichte Höhe einer Materialrücknahme kleiner oder gleich der entsprechenden Erstreckung der unbeeinflusst übereinander gestapelten zugehörigen Polkontakte und deren parallel zur Flachseite einer Elektrodenfolie gemessene Tiefe größer oder gleich der entsprechenden Erstreckung der zugehörigen Polkontakte. Hierdurch sind die Polkontakte sicher in den Materialrücknahmen gehaltert und können bei insbesondere dichter Verbindung zwischen Zellgehäuserahmen und den Zellgehäuseseitenwänden elektrisch leitend mit diesen verpresst sein.In one embodiment of the invention, the cell housing frame on two electrically isolated from each other and spaced-apart material withdrawals, in which the formed as Stromabieiterfahnen pole contacts are each arranged a polarity. In a meaningful way, the measured in the direction of stacking the electrode sheets clear height of a material withdrawal is less than or equal to the corresponding extent of the uninfluenced stacked pole contacts and their measured parallel to the flat side of an electrode film depth greater than or equal to the corresponding extent of the associated pole contacts. As a result, the pole contacts are securely held in the material returns and can be pressed electrically conductive in particular tight connection between the cell housing frame and the cell housing side walls.
Um eine in der Batterie entstehende Verlustwärme abzuführen, ist eine Wärmeleitplatte zur Kühlung der Batterie vorgesehen. In einer vorteilhaften Weiterführung der Erfindung ist zwischen der Wärmeleitplatte und dem Zellverbund ein wärmeleitfähiges Material eingebracht, welches vorzugsweise aus einer Vergussmasse, einem Lack und/oder einer Wärmeleitfolie gebildet ist. Dies führt zu einer Erhöhung des Wärmeüberganges zwischen dem Zellverbund und der Wärmeleitplatte und erhöht damit zum einen die Leistungsfähigkeit und zum anderen die Lebensdauer der Batterie.In order to dissipate a heat loss arising in the battery, a heat-conducting plate is provided for cooling the battery. In an advantageous development of the invention, a heat-conductive material is introduced between the heat-conducting plate and the cell composite, which is preferably formed from a potting compound, a lacquer and / or a heat-conducting foil. This leads to an increase in the heat transfer between the cell composite and the heat conducting plate and thus increases on the one hand the performance and on the other hand the life of the battery.
In bevorzugter Weise sind zumindest der Zellverbund und die Wärmeleitplatte in einem Gehäuserahmen angeordnet, der insbesondere als zumindest ein den Zellverbund und die Wärmeleitplatte vollständig umschließendes Spannelement, insbesondere ein Spannband oder ein Spannrahmen, ausgebildet ist. Durch eine oder mehrere der genannten Maßnahmen ist es möglich, bei einer preiswerten Herstellung den Aufbau der Batterie und die Kontaktierung der Einzelzellen zu vereinfachen, wobei gleichzeitig durch die Verwendung eines Dichtungselementes die Pole sicher vor Fremdstoffen, insbesondere Feuchtigkeit und daraus folgend vor Korrosion geschützt sind.Preferably, at least the cell assembly and the heat-conducting plate are arranged in a housing frame, which is in particular formed as at least one tensioning element, in particular a tensioning band or a tensioning frame, completely surrounding the cell assembly and the heat-conducting plate. By one or more of the measures mentioned, it is possible to simplify the construction of the battery and the contacting of the individual cells with an inexpensive production, wherein at the same time the poles are safely protected from foreign substances, in particular moisture and consequent corrosion by the use of a sealing element.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand von Zeichnungen näher erläutert.Embodiments of the invention are explained in more detail below with reference to drawings.
Dabei zeigen:Showing:
Fig. 1 schematisch eine perspektivische Ansicht einer Einzelzelle,1 is a schematic perspective view of a single cell,
Fig. 2 schematisch eine Schnittdarstellung der Einzelzelle gemäß Figur 1 ,FIG. 2 is a schematic sectional view of the single cell according to FIG. 1, FIG.
Fig. 3 schematisch eine Explosionsdarstellung einer Einzelzelle,3 schematically an exploded view of a single cell,
Fig. 4 schematisch ein vereinfachtes Schaltbild der elektrischen Verschaltung mehrerer Einzelzellen einer Batterie,4 schematically shows a simplified circuit diagram of the electrical connection of a plurality of individual cells of a battery,
Fig. 5 schematisch eine Explosionsdarstellung einer Batterie,5 is a schematic exploded view of a battery;
Fig. 6 schematisch eine perspektivische Ansicht der Batterie gemäß Figur 5, undFig. 6 schematically shows a perspective view of the battery according to Figure 5, and
Fig. 7 schematisch eine Schnittdarstellung der Batterie gemäß Figur 6.7 is a schematic sectional view of the battery according to FIG. 6.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.
Figur 1 und Figur 2 zeigen eine als Flachzelle ausgebildete Einzelzelle 1. Dabei ist ein Zellgehäuse 2 der Einzelzelle 1 aus zwei Zellgehäuseseitenwänden 2.1 , 2.2 und einem dazwischen angeordneten, randseitig umlaufenden Zellgehäuserahmen 2.3 gebildet.FIG. 1 and FIG. 2 show a single cell 1 designed as a flat cell. In this case, a cell housing 2 of the individual cell 1 is formed from two cell housing side walls 2.1, 2.2 and an interposed cell housing frame 2.3 arranged at the edge.
Die Zellgehäuseseitenwände 2.1 , 2.2 der Einzelzelle 1 sind elektrisch leitend ausgeführt und bilden Pole P+, P- der Einzelzelle 1. Der Zellgehäuserahmen 2.3 ist elektrisch isolierend ausgeführt, so dass die Zellgehäuseseitenwände 2.1 , 2.2 unterschiedlicher Polarität elektrisch voneinander isoliert sind.The cell housing side walls 2.1, 2.2 of the single cell 1 are designed to be electrically conductive and form poles P +, P- of the single cell 1. The cell housing frame 2.3 is made electrically insulating, so that the cell housing side walls 2.1, 2.2 of different polarity are electrically isolated from each other.
Der Zellgehäuserahmen 2.3 weist zusätzlich an einer Oberseite eine partielle Materialerhöhung 2.31 auf, deren Funktion in der Beschreibung der Figuren 5 bis 7 näher erläutert wird.The cell housing frame 2.3 additionally has on a top side a partial increase in material 2.31, the function of which will be explained in greater detail in the description of FIGS.
Dabei weist die Einzelzelle 1 mindestens drei Spannungs-Anschlusskontakte K1 bis K3 auf. Gemäß der Erfindung weist die den Pol P- bildende Zellgehäuseseitenwand 2.1 mindestens zwei Spannungs-Anschlusskontakte K1 , K2 auf, die insbesondere zellintern elektrisch miteinander verschaltet, insbesondere parallel geschaltet sind. Dabei ist der erste Spannungs-Anschlusskontakt K1 durch den Pol P- der Einzelzelle 1 und somit die Zellgehäuseseitenwand 2.1 gebildet. Der zweite Spannungs-Anschlusskontakt K2 ist als Messanschluss 2.11 ausgeführt, der radial über die Zellgehäuseseitenwand 2.1 an einer beliebigen Position, über die Einzelzelle 1 als eine fahnenartige Verlängerung hinausragt.In this case, the individual cell 1 has at least three voltage connection contacts K1 to K3. According to the invention, the cell housing side wall 2.1, which forms the pole P, has at least two voltage connection contacts K1, K2 which, in particular, are electrically interconnected inside the cell, in particular in parallel. In this case, the first voltage connection contact K1 is formed by the pole P of the individual cell 1 and thus the cell housing side wall 2.1. The second voltage connection contact K2 is designed as a measuring connection 2.11, which protrudes radially beyond the cell housing side wall 2.1 at an arbitrary position, beyond the individual cell 1 as a flag-like extension.
Erfindungsgemäß besteht eine in den Figuren 5 bis 7 näher dargestellte Batterie B aus mehreren solchen Einzelzellen 1 , deren Pole P+, P-, insbesondere die als Flachseiten ausgeführten Zellgehäuseseitenwände 2.1 , 2.2, in Abhängigkeit von einer gewünschten Batteriespannung und -leistung parallel und/oder seriell miteinander verschaltet sind und einen in den Figuren 5 bis 7 dargestellten Zellverbund Z bilden.According to the invention, a battery B shown in greater detail in FIGS. 5 to 7 consists of a plurality of such individual cells 1, whose poles P +, P-, in particular the cell housing side walls 2.1, 2.2 designed as flat sides, in parallel and / or in series depending on a desired battery voltage and power interconnected and form a cell group Z shown in Figures 5 to 7.
Figur 2 zeigt in einer Schnittdarstellung der Einzelzelle 1 gemäß Figur 1 eine vorteilhafte Ausgestaltung der Erfindung, wobei in dem Zellgehäuse 2 ein Elektrodenstapel 4 angeordnet ist.FIG. 2 shows in a sectional view of the single cell 1 according to FIG. 1 an advantageous embodiment of the invention, wherein an electrode stack 4 is arranged in the cell housing 2.
In einem mittleren Bereich sind dabei Elektrodenfolien 5 unterschiedlicher Polarität, insbesondere Aluminium- und/oder Kupferfolien und/oder Folien aus einer Metalllegierung, übereinander gestapelt und mittels eines Separators 6, insbesondere einer Separatorfolie, elektrisch voneinander isoliert.In this case, electrode foils 5 of different polarity, in particular aluminum and / or copper foils and / or foils of a metal alloy, are stacked on top of one another and electrically insulated from one another by means of a separator 6, in particular a separator foil.
In einem über den mittleren Bereich des Elektrodenstapels 4 überstehenden Randbereich der Elektrodenfolien 5 sind Elektrodenfolien 5 gleicher Polarität elektrisch miteinander verbunden. Die miteinander verbundenen Enden der Elektrodenfolien 5 gleicher Polarität bilden somit einen Polkontakt 7, der auch als Stromabieiterfahne bezeichnet wird. Die Polkontakte 7 unterschiedlicher Polarität der Einzelzelle 1 werden im Weiteren zur besseren Übersichtlichkeit als Stromabieiterfahnen 7 bezeichnet. Im Detail werden die Enden der Elektrodenfolien 5 elektrisch leitend miteinander verpresst und/oder verschweißt und bilden die Stromabieiterfahnen 7 des Elektrodenstapels 4.In an over the central region of the electrode stack 4 protruding edge region of the electrode films 5 electrode films 5 of the same polarity are electrically connected together. The interconnected ends of the electrode films 5 of the same polarity thus form a pole contact 7, which is also referred to as Stromabieiterfahne. The pole contacts 7 different polarity of the single cell 1 will be further to better clarity than Stromabieiterfahnen 7 referred. In detail, the ends of the electrode films 5 are electrically conductively pressed together and / or welded and form the Stromabieiterfahnen 7 of the electrode stack 4th
Der Elektrodenstapel 4 ist in dem den Elektrodenstapel 4 randseitig umlaufenden Zellgehäuserahmen 2.3 angeordnet. Der Zellgehäuserahmen 2.3 weist dazu zwei voneinander beabstandete Materialrücknahmen 2.33, 2.34 auf, die so ausgebildet sind, dass die Stromabieiterfahnen 7 unterschiedlicher Polarität in den Materialrücknahmen 2.33, 2.34 angeordnet sind. Die lichte Höhe h der Materialrücknahmen 2.33, 2.34 ist so ausgebildet, dass sie der Erstreckung der unbeeinflusst übereinander gestapelten Stromabieiterfahnen 7 entspricht oder geringer als diese ist. Die Tiefe t der Materialrücknahmen 2.33, 2.34 entspricht der Erstreckung der Stromabieiterfahnen 7 oder ist größer ausgebildet als diese.The electrode stack 4 is arranged in the cell housing frame 2.3 surrounding the electrode stack 4 at the edge. For this purpose, the cell housing frame 2.3 has two spaced-apart material returns 2.33, 2.34, which are designed so that the Stromabieiterfahnen 7 different polarity in the material returns 2.33, 2.34 are arranged. The clear height h of the material returns 2.33, 2.34 is designed so that it corresponds to the extent of the unaffected stacked Stromabieiterfahnen 7 or less than this. The depth t of the material returns 2.33, 2.34 corresponds to the extent of Stromabieiterfahnen 7 or is designed to be larger than this.
Da der Zellgehäuserahmen 2.3 vorzugsweise aus einem elektrisch isolierenden Material gefertigt ist, sind die Stromabieiterfahnen 7 unterschiedlicher Polarität elektrisch voneinander isoliert, so dass zusätzliche Anordnungen für eine elektrische Isolation in vorteilhafter Weise nicht notwendig sind.Since the cell housing frame 2.3 is preferably made of an electrically insulating material, the Stromabieiterfahnen 7 different polarity are electrically isolated from each other, so that additional arrangements for electrical insulation are not necessary in an advantageous manner.
Bei einer Befestigung der Zellgehäuseseitenwände 2.1 , 2.2, welche beispielsweise in nicht näher dargestellter Weise mittels Kleben und/oder Umbördeln der Flachseiten 8 in eine in dem Zellgehäuserahmen 6 umlaufende Aussparung erfolgt, werden die Stromabieiterfahnen 7 unterschiedlicher Polarität gegen dieWhen attaching the cell housing side walls 2.1, 2.2, which takes place for example in a manner not shown by gluing and / or flanging the flat sides 8 in a circumferential in the cell housing frame 6 recess, the Stromabieiterfahnen 7 of different polarity against the
Zellgehäuseseitenwände 2.1 , 2.2 gepresst, so dass ein jeweiliges elektrisches Potenzial der Stromabieiterfahnen 7 an den Zellgehäuseseitenwänden 2.1 , 2.2 anliegt und diese die Pole P+, P- der Einzelzelle 1 bilden.Cell housing side walls 2.1, 2.2 pressed so that a respective electrical potential of the Stromabieiterfahnen 7 rests against the cell housing side walls 2.1, 2.2 and these form the poles P +, P- of the single cell 1.
In einer Weiterbildung der Erfindung kann zwischen den Stromabieiterfahnen 7, welche z. B. aus Kupfer gefertigt sind, und den Gehäuseseitenwänden 2.1 , 2.2, welche z. B. aus Aluminium gefertigt sind, zusätzlich eine nicht näher dargestellte Folie, welche z. B. aus Nickel gefertigt ist, angeordnet sein, um eine verbesserte elektrische Anbindung zwischen den Stromabieiterfahnen 7 und den Zellgehäuseseitenwänden 2.1 , 2.2 zu erreichen.In one embodiment of the invention, between the Stromabieiterfahnen 7, which z. B. made of copper, and the housing side walls 2.1, 2.2, which z. B. made of aluminum, in addition a film not shown, which z. B. made of nickel, may be arranged to achieve an improved electrical connection between the Stromabieiterfahnen 7 and the cell housing side walls 2.1, 2.2.
In einer Ausgestaltung der Erfindung ist es weiterhin möglich, eine nicht näher dargestellte elektrisch isolierende Folie zwischen den Stromabieiterfahnen 7 und den Zellgehäuseseitenwänden 2.1 , 2.2 anzuordnen bzw. die Zellgehäuseseitenwände 2.1 , 2.2 einseitig mit einer elektrischen isolierenden Schicht auszuführen, so dass eine elektrische Kontaktierung der Stromabieiterfahnen 7 mit den Zellgehäuseseitenwänden 2.1 , 2.2 erst bei einem nicht näher ausgeführten, aus dem Stand der Technik bekannten Durchschweißverfahren von außen durch die Zellgehäuseseitenwände 2.1 , 2.2 entsteht.In one embodiment of the invention, it is further possible to arrange an electrically insulating film not shown in detail between the Stromabieiterfahnen 7 and the cell housing side walls 2.1, 2.2 and the Zellgehäuseseitenwände 2.1, 2.2 on one side with an electrically insulating layer, so that an electric Contacting the Stromabieiterfahnen 7 with the cell housing side walls 2.1, 2.2 only at a not further running, known from the prior art through-welding process from the outside through the cell housing side walls 2.1, 2.2 is formed.
Figur 3 stellt eine Explosionsdarstellung der in den Figuren 1 bis 2 näher erläuterten Einzelzelle 1 dar und zeigt insbesondere die Anordnung des Elektrodenstapels 4 in dem Zellgehäuserahmen 2.3 sowie der Zellgehäuseseitenwände 2.1 , 2.2.FIG. 3 shows an exploded view of the single cell 1 explained in greater detail in FIGS. 1 to 2 and in particular shows the arrangement of the electrode stack 4 in the cell housing frame 2. 3 and the cell housing side walls 2. 1, 2.
In einer vorteilhaften Ausgestaltung der Erfindung ist die Zellgehäuseseitenwand 2.1 mit dem fahnenartigen Messanschluss 2.11 in einem unteren Bereich um 90° in Richtung des Zellgehäuserahmens 2.3 gebogen, so dass bei einer Verwendung einer in den Figuren 5 bis 7 dargestellten Wärmeleitplatte 8 eine Vergrößerung einer wirksamen Wärmeübergangsfläche und somit eine verbesserte Kühlung der Batterie B erzielt werden.In an advantageous embodiment of the invention, the cell housing side wall 2.1 is bent with the flag-like measuring connection 2.11 in a lower region by 90 ° in the direction of the cell housing frame 2.3, so that when using a heat conducting plate 8 shown in Figures 5 to 7, an enlargement of an effective heat transfer surface and Thus, an improved cooling of the battery B can be achieved.
Figur 4 zeigt ein Schaltungsbild der erfindungsgemäßen zellinternen elektrischen Verschaltung der Spannungs-Anschlusskontakte K1 und K2 des einen Pols P- und somit der Zellgehäuseseitenwand 2.1. Dabei sind mehrere Einzelzellen 1 in Reihe elektrisch miteinander verschaltet und bilden eine Batterie B. Die Pole P- der Einzelzellen 1 weisen dabei jeweils zwei Spannungs-Anschlusskontakte K1 und K2 auf, wobei der Spannungs- Anschlusskontakt K1 den Pol P- bildet und der Spannungs-Anschlusskontakt K2 den Messanschluss 2.11 bildet, an welchem mindestens ein elektronisches Bauelement 13 anschließbar ist. Dabei kann das elektronische Bauelement 13 eine Einrichtung 13.1 zur Zeilspannungsüberwachung, z. B. ein Spannungsmesser, und Einrichtungen 13.2 zum Zellspannungsausgleich, z. B. einen schaltbaren Widerstand zum Entladen der Einzellen mit der höchsten Spannung, umfassen. Die beiden Spannungs-Anschlusskontakte K1 , K2 sind zellintern parallel geschaltet.FIG. 4 shows a circuit diagram of the cell-internal electrical connection according to the invention of the voltage connection contacts K1 and K2 of the one pole P- and thus of the cell housing side wall 2.1. In this case, several individual cells 1 are electrically connected in series with one another and form a battery B. The poles P of the individual cells 1 each have two voltage connection contacts K1 and K2, wherein the voltage connection contact K1 forms the pole P- and the voltage Terminal contact K2 forms the measuring terminal 2.11, to which at least one electronic component 13 can be connected. In this case, the electronic component 13, a device 13.1 for line voltage monitoring, z. B. a voltmeter, and means 13.2 for cell voltage compensation, z. B. a switchable resistor for discharging the Einzellen with the highest voltage include. The two voltage connection contacts K1, K2 are connected in parallel within the cell.
Figur 5 zeigt eine Explosionsdarstellung einer Batterie B mit einem aus mehreren Einzelzellen 1 gebildeten Zellverbundes Z. Zur Bildung des Zellverbundes Z werden die Pole P+, P- mehrerer Einzelzellen 1 in Abhängigkeit von einer gewünschten elektrischen Spannung und Leistung der Batterie B seriell und/oder parallel elektrisch miteinander verschaltet. Ebenfalls in Abhängigkeit von der gewünschten elektrischen Spannung und Leistung der Batterie B kann der Zellverbund Z in Weiterbildungen der Erfindung aus einer beliebigen Anzahl von Einzelzellen 1 gebildet sein. Die in Figuren 4 und 5 dargestellte serielle elektrische Verschattung der Pole P+, P- der Einzelzellen 1 wird durch die elektrische Kontaktierung derFIG. 5 shows an exploded view of a battery B with a cell network Z formed from a plurality of individual cells 1. To form the cell network Z, the poles P +, P- of several individual cells 1 are connected in series and / or in parallel as a function of a desired electrical voltage and power of the battery B. electrically interconnected. Also in dependence on the desired electrical voltage and power of the battery B, the cell assembly Z may be formed in developments of the invention of any number of single cells 1. The illustrated in Figures 4 and 5 serial electrical shading of the poles P +, P- of the individual cells 1 is by the electrical contacting of the
Zellgehäuseseitenwände 2.1 , 2.2 von benachbarten Einzelzellen 1 mit unterschiedlichem elektrischem Potenzial realisiert. Dabei ist insbesondere die Zellgehäuseseitenwand 2.2 einer der Einzelzellen 1 kraftschlüssig, formschlüssig und/oder stoffschlüssig mit der Zellgehäuseseitenwand 2.1 mit dem fahnenartigen Messanschluss 2.11 einer benachbarten Einzelzelle 1 elektrisch verbunden.Cell housing side walls 2.1, 2.2 realized by adjacent individual cells 1 with different electrical potential. In particular, the cell housing side wall 2.2 of one of the individual cells 1 is connected in a force-locking, positive-locking and / or material-locking manner with the cell housing side wall 2.1 to the flag-like measuring connection 2.11 of an adjacent individual cell 1.
In den Figuren 5 bis 7 ist die Batterie B, welche beispielsweise in einem Fahrzeug, insbesondere einem Hybrid- und/oder Elektrofahrzeug zum Einsatz kommt, in einer Explosionsdarstellung, einer perspektivischen Ansicht und als Schnittzeichnung dargestellt.In FIGS. 5 to 7, the battery B, which is used for example in a vehicle, in particular a hybrid and / or electric vehicle, is shown in an exploded view, a perspective view and as a sectional drawing.
Die Batterie B ist im dargestellten Ausführungsbeispiel der Erfindung aus dreißig Einzelzellen 1 gebildet, welche elektrisch seriell miteinander verschaltet sind. Zu einer Entnahme und/oder einer Zuführung von elektrischer Energie aus und/oder in die Batterie B ist an der Zellgehäuseseitenwand 2.2 der ersten Einzelzelle E1 des Zellverbundes Z, welche insbesondere den positiven Pol P+ der ersten Einzelzelle E1 bildet, ein elektrisches Anschlusselement 9 angeordnet. Dieses Anschlusselement 9 ist als elektrische Anschlussfahne ausgeführt und bildet den positiven Polanschluss Ppos der Batterie B.The battery B is formed in the illustrated embodiment of the invention of thirty individual cells 1, which are electrically connected in series with each other. For an extraction and / or a supply of electrical energy from and / or into the battery B, an electrical connection element 9 is arranged on the cell housing side wall 2.2 of the first single cell E1 of the cell network Z, which in particular forms the positive pole P + of the first single cell E1. This connection element 9 is designed as an electrical terminal lug and forms the positive pole terminal P pos of the battery B.
Auch an der Zellgehäuseseitenwand 2.1 der letzten Einzelzelle E2 des Zellverbundes Z, welche insbesondere den negativen Pol P- der letzten Einzelzelle E2 bildet, ist ein elektrisches Anschlusselement 10 angeordnet. Dieses Anschlusselement 10 ist ebenfalls als elektrische Anschlussfahne ausgeführt und bildet den negativen Polanschluss Pneg der Batterie B.Also on the cell housing side wall 2.1 of the last single cell E2 of the cell network Z, which forms in particular the negative pole P- of the last single cell E2, an electrical connection element 10 is arranged. This connection element 10 is likewise embodied as an electrical connection lug and forms the negative pole connection P neg of the battery B.
In der dargestellten sinnvollen Weiterführung der Erfindung ist der Zellverbund Z thermisch mit der Wärmeleitplatte 8 gekoppelt. Dabei sind die Zellgehäuseseitenwände 2.1 mit dem um 90° in Richtung des Zellgehäuserahmens 2.3 gebogenen unteren Bereich direkt oder indirekt über ein wärmeleitfähiges Material, insbesondere eine Wärmeleitfolie 11 , thermisch an die Wärmeleitplatte 8 gekoppelt, so dass eine effektive Kühlung der Batterie B erzielt wird.In the illustrated useful continuation of the invention, the cell composite Z is thermally coupled to the heat conducting plate 8. In this case, the cell housing side walls 2.1 are thermally coupled to the heat conducting plate 8 directly or indirectly via a thermally conductive material, in particular a heat conducting foil 11, with the lower area bent by 90 ° in the direction of the cell housing frame 2.3, so that an effective cooling of the battery B is achieved.
In einer Weiterbildung der Erfindung kann das wärmeleitfähige Material zusätzlich oder alternativ aus einer Vergussmasse und/oder einem Lack gebildet sein. Zu einer kraftschlüssigen Verbindung der Einzelzellen 1 zu dem Zellverbund Z und einer kraftschlüssigen Anbindung der Wärmeleitplatte 8 und der Wärmeleitfolie 11 an den Zellverbund Z sind der Zellverbund Z, die Wärmeleitplatte 8 und die Wärmeleitfolie 11 in einem Gehäuserahmen angeordnet.In one development of the invention, the thermally conductive material may additionally or alternatively be formed from a potting compound and / or a lacquer. For a non-positive connection of the individual cells 1 to the cell assembly Z and a non-positive connection of the heat-conducting 8 and the heat-conducting film 11 to the cell assembly Z of the cell assembly Z, the heat conducting plate 8 and the heat-conducting film 11 are arranged in a housing frame.
Dieser Gehäuserahmen ist insbesondere aus einem oder mehreren den Zellverbund Z vollständig umschließenden Spannelementen 12, z. B. Spannbänder, gebildet, die die Einzelzellen 1 bzw. den Zellverbund Z, die Wärmeleitplatte 8 und die Wärmeleitfolie 11 sowohl in horizontaler als auch in vertikaler Richtung kraftschlüssig verbinden.This housing frame is in particular one or more of the cell composite Z completely enclosing clamping elements 12, z. As clamping bands formed, which connect the individual cells 1 and the cell composite Z, the heat conducting plate 8 and the heat-conducting film 11 in both the horizontal and vertical direction non-positively.
Um einen sicheren Halt der Spannelemente 12 zu ermöglichen, sind an einer Unterseite der Wärmeleitplatte 8 vorzugsweise zu den Abmessungen der Spannelemente 12 korrespondierende Materialvertiefungen 8.1 ausgebildet.In order to enable a secure hold of the clamping elements 12, 12 corresponding to the dimensions of the clamping elements 12 corresponding recesses 8.1 are formed on an underside of the heat conducting plate.
In nicht näher dargestellten Weiterbildungen der Erfindung können einige oder alle Komponenten, d. h. die Einzelzellen 1 , die Wärmeleitplatte 8, die Wärmeleitfolie 11 oder die gesamte Batterie B alternativ oder zusätzlich in einem Batteriegehäuse teilweise oder vollständig gekapselt verbaut sein.In non-illustrated embodiments of the invention, some or all components, d. H. the single cells 1, the heat conduction plate 8, the heat conducting foil 11 or the entire battery B may be installed partially or completely encapsulated alternatively or additionally in a battery housing.
Ist die Batterie B beispielsweise eine Lithium-Ionen-Hochvolt-Batterie, wird im Allgemeinen eine spezielle Elektronik benötigt, welche z. B. eine Zellspannung der Einzelzellen 1 überwacht und korrigiert, ein Batteriemanagementsystem, welches insbesondere eine Leistungsaufnahme und -abgäbe der Batterie B steuert (= Batteriesteuerung), und Sicherungselemente, welche bei Fehlfunktionen der Batterie B eine sichere Abtrennung der Batterie B von einem elektrischen Netz durchführen.If the battery B, for example, a lithium-ion high-voltage battery, a special electronics is generally required, which z. B. a cell voltage of the individual cells 1 monitors and corrects a battery management system, which in particular a power consumption and Abgäbe the battery B controls (= battery control), and fuse elements which perform a malfunction of the battery B safe separation of the battery B from an electrical network ,
Im dargestellten Ausführungsbeispiel der Erfindung ist ein elektronisches Bauelement 13 vorgesehen, weiches zumindest nicht näher dargestellte Einrichtungen zur Zellspannungsüberwachung und/oder zu einem Zellspannungsausgleich beinhaltet. Das elektronische Bauelement 13 kann in einer Weiterführung der Erfindung auch als gekapselte elektronische Baueinheit ausgebildet sein.In the illustrated embodiment of the invention, an electronic component 13 is provided, which includes at least not shown devices for cell voltage monitoring and / or to a cell voltage compensation. The electronic component 13 may be formed in a continuation of the invention as encapsulated electronic assembly.
Das elektronische Bauelement 13 ist kopfseitig an dem Zellverbund auf den Spannelementen 12 und den Zellgehäuserahmen 2.3 der Einzelzellen 1 angeordnet. Um eine möglichst große Auflagefläche des elektronischen Bauelementes 13 und gleichzeitig eine Fixierung der Spannelemente 12 an der Oberseite des Zellverbundes Z zu erreichen, ist an der Oberseite des Rahmens 2.3 einer jeden Einzelzelle 1 partiell die Materialerhöhung 2.31 ausgebildet, deren Höhe insbesondere der Dicke des Spannelementes 12 entspricht. Zu einer Befestigung des elektronischen Bauelementes 13 an dem Zellverbund Z und/oder an den Spannelementen 12 kommen nicht näher dargestellte kraftschlüssige, formschlüssige und/oder stoffschlüssige Verbindungstechniken zum Einsatz.The electronic component 13 is arranged at the head end on the cell assembly on the clamping elements 12 and the cell housing frame 2.3 of the individual cells 1. In order to achieve the largest possible contact surface of the electronic component 13 and at the same time a fixation of the clamping elements 12 at the top of the cell assembly Z, is at the top of the frame 2.3 of each individual cell 1 partially formed the material increase 2.31, whose height corresponds in particular to the thickness of the clamping element 12. For a fastening of the electronic component 13 to the cell assembly Z and / or to the clamping elements 12 not shown frictional, positive and / or cohesive bonding techniques are used.
Für einen elektrischen Kontakt des Zellverbundes Z mit dem elektronischen Bauelement 13 sind die an den Zellgehäuseseitenwänden 2.1 angeordneten fahnenartigen Messanschlüsse 2.11 durch in dem elektronischen Bauelement 13 angeordnete Kontaktelemente 13.3 geführt, die eine zu den fahnenartigen Messanschlüsse 2.11 korrespondierende Form aufweisen.For electrical contact of the cell assembly Z with the electronic component 13, the tab-like measuring terminals 2.11 arranged on the cell housing side walls 2.1 are guided by contact elements 13.3 arranged in the electronic component 13, which have a shape corresponding to the flag-like measuring terminals 2.11.
Zusätzlich sind auch weitere nicht dargestellte elektronische Baueinheiten vorgesehen, welche beispielsweise das Batteriemanagementsystem, die Batteriesteuerung, die Sicherungselemente und/oder weitere Einrichtungen zum Betrieb und zur Steuerung der Batterie B beinhalten. In addition, other electronic assemblies, not shown, are provided, which include, for example, the battery management system, the battery control, the fuse elements and / or other devices for operating and controlling the battery B.
Daimler AGDaimler AG
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Einzelzelle1 single cell
2 Zellgehäuse2 cell housing
2.1 Zellgehäuseseitenwand2.1 cell housing sidewall
2.11 Messanschluss2.11 measuring connection
2.2 Zellgehäuseseitenwand2.2 cell housing sidewall
2.3 Zellgehäuserahmen2.3 cell housing frame
2.31 Materialerhöhung2.31 material increase
2.33 Materialrücknahme2.33 Material withdrawal
2.34 Materialrücknahme2.34 Material withdrawal
4 Elektrodenstapel4 electrode stacks
5 Elektrodenfolie5 electrode foil
6 Separator6 separator
7 Polkontakt (Stromabieiterfahne)7 pole contact (Stromabieiterfahne)
8 Wärmeleitplatte8 heat conducting plate
8.1 Materialvertiefung8.1 Material recess
9 Elektrisches Anschlusselement9 Electrical connection element
10 Elektrisches Anschlusselement10 Electrical connection element
11 Wärmeleitfolie11 heat-conducting foil
12 Spannelement12 clamping element
13 Elektronisches Bauelement13 Electronic component
13.1 Einrichtung zur Zellspannungsüberwachung13.1 Device for cell voltage monitoring
13.2 Einrichtung zum Zellspannungsausgleich13.2 Device for cell voltage compensation
13.3 Kontaktelement13.3 contact element
B BatterieB battery
E1 Erste EinzelzelleE1 First single cell
E2 Letzte Einzelzelle h HöheE2 last single cell h height
K1 bis K3 Spannungs-Anschlusskontakte P+ Positiver Pol P- Negativer PolK1 to K3 Voltage connection contacts P + positive pole P- negative pole
Pneg Negativer PolanschlussP n eg Negative terminal
Ppos Positiver Polanschluss t TiefePpos positive pole connection t depth
Z Zellverbund Z cell network

Claims

Daimler AGPatentansprüche Daimler AG patent claims
1. Batterie (B), insbesondere Hochvolt-Batterie mit mehreren Einzelzellen (1), deren Pole (P+, P-) elektrisch parallel und/oder seriell miteinander verschaltet sind und einen Zellverbund (Z) bilden, wobei die jeweilige Einzelzelle (1) von einem aus zwei Zellgehäuseseitenwände (2.1 , 2.2) und einem Zellgehäuserahmen (2.3) gebildeten Zellgehäuse (2) umgeben ist, dadurch gekennzeichnet, dass zumindest einer der Pole (P-) einer jeweiligen Einzelzelle (1) mindestens zwei1. Battery (B), in particular high-voltage battery with a plurality of individual cells (1) whose poles (P +, P-) are electrically connected in parallel and / or in series with each other and form a cell network (Z), wherein the respective individual cell (1) is surrounded by a cell housing (2) formed from two cell housing side walls (2.1, 2.2) and a cell housing frame (2.3), characterized in that at least one of the poles (P-) of a respective single cell (1) has at least two
Spannungs-Anschlusskontakte (K1 , K2) aufweist.Voltage connection contacts (K1, K2) has.
2. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Spannungs-Anschlusskontakte (K1 , K2) eines der Pole (P-) zellintern elektrisch miteinander verschaltet, insbesondere parallel geschaltet sind.2. Battery (B) according to claim 1, characterized in that the voltage connection contacts (K1, K2) of one of the poles (P-) interconnected with each other inside the cell, in particular are connected in parallel.
3. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass ein erster Spannungs-Anschlusskontakt (K1) einen der Pole (P-) der Einzelzelle (1) und der zweite Spannungs-Anschlusskontakt (K2) einen Messanschluss (2.11) bildet.3. Battery (B) according to claim 1, characterized in that a first voltage terminal contact (K1) one of the poles (P) of the single cell (1) and the second voltage terminal contact (K2) forms a measuring terminal (2.11).
4. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Pole (P+, P-) der Einzelzelle (1) durch die Zellgehäuseseitenwände (2.1 , 2.2) gebildet sind, wobei Polkontakte (7) der jeweiligen Einzelzelle (1) direkt auf gegeneinander elektrisch isolierte Zellgehäuseseitenwände (2.1 , 2.2) gelegt sind. 4. Battery (B) according to claim 1, characterized in that the poles (P +, P-) of the single cell (1) through the cell housing side walls (2.1, 2.2) are formed, wherein pole contacts (7) of the respective single cell (1) directly on against each other electrically isolated cell housing side walls (2.1, 2.2) are placed.
5. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Pole (P+, P-) verschiedener Einzelzellen (1) durch Kontaktierung der Zellgehäuseseitenwände (2.1 , 2.2) der Einzelzellen (1) miteinander elektrisch verschaltet sind.5. Battery (B) according to claim 1, characterized in that the poles (P +, P-) of different individual cells (1) by contacting the cell housing side walls (2.1, 2.2) of the individual cells (1) are electrically interconnected.
6. Batterie (B) nach Anspruch 2, dadurch gekennzeichnet, dass der jeweilige Messanschluss (2.11) der Einzelzellen (1) elektrisch mit einem elektronischen Bauelement (13) verbunden ist.6. Battery (B) according to claim 2, characterized in that the respective measuring terminal (2.11) of the individual cells (1) is electrically connected to an electronic component (13).
7. Batterie (B) nach Anspruch 6, dadurch gekennzeichnet, dass das elektronische Bauelement (13) eine gekapselte elektronische Baueinheit ist.7. Battery (B) according to claim 6, characterized in that the electronic component (13) is an encapsulated electronic unit.
8. Batterie (B) nach Anspruch 6, dadurch gekennzeichnet, dass das elektronische Bauelement (13) Einrichtungen zu einer Zellspannungsüberwachung und/oder einem Zellspannungsausgleich umfasst.8. Battery (B) according to claim 6, characterized in that the electronic component (13) comprises means for cell voltage monitoring and / or cell voltage compensation.
9. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Einzelzellen (1) kraftschlüssig, formschlüssig und/oder stoffschlüssig miteinander verbunden sind.9. Battery (B) according to claim 1, characterized in that the individual cells (1) are non-positively, positively and / or materially connected to each other.
10. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Pole (P-, P+) verschiedener Einzelzellen (1) kraftschlüssig, formschlüssig und/oder stoffschlüssig miteinander verbunden sind.10. Battery (B) according to claim 1, characterized in that the poles (P-, P +) of different individual cells (1) are non-positively, positively and / or materially connected to each other.
11. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass in dem Zellgehäuse (2) ein Elektrodenstapel (4) angeordnet ist, dessen einzelne Elektroden, vorzugsweise Elektrodenfolien (5), mit den als Stromabieiterfahnen ausgebildeten Polkontakten (7) elektrisch leitend verbunden sind. 11. Battery (B) according to claim 1, characterized in that in the cell housing (2) an electrode stack (4) is arranged, the individual electrodes, preferably electrode films (5), electrically connected to the pole contacts formed as Stromabieiterfahnen (7) are.
12. Batterie (B) nach Anspruch 11 , dadurch gekennzeichnet, dass zumindest Elektroden unterschiedlicher Polarität durch einen Separator (6), vorzugsweise eine Separatorfolie, voneinander isoliert sind.12. Battery (B) according to claim 11, characterized in that at least electrodes of different polarity are isolated from each other by a separator (6), preferably a separator foil.
13. Batterie (B) nach Anspruch 11 , dadurch gekennzeichnet, dass13. Battery (B) according to claim 11, characterized in that
Polkontakte (7) gleicher Polarität (+, -) elektrisch leitend miteinander verbunden sind.Pole contacts (7) of the same polarity (+, -) are electrically connected to each other.
14. Batterie (B) nach Anspruch 11 , dadurch gekennzeichnet, dass14. Battery (B) according to claim 11, characterized in that
Polkontakte (7) gleicher Polarität (+, -) elektrisch leitend miteinander verpresst und/oder verschweißt sind.Pole contacts (7) of the same polarity (+, -) are electrically conductively pressed together and / or welded.
15. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass das Zellgehäuse (2) zwei Zellgehäuseseitenwände (2.1 , 2.2) und einen dazwischen angeordneten, randseitig umlaufenden und die Zellgehäuseseitenwände (2.1 , 2.2) elektrisch voneinander isolierenden Zellgehäuserahmen (2.3) aufweist.15. Battery (B) according to claim 1, characterized in that the cell housing (2) has two cell housing side walls (2.1, 2.2) and an interposed, peripherally encircling and the cell housing side walls (2.1, 2.2) electrically isolated from each other cell housing frame (2.3).
16. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Zellgehäuseseitenwände (2.1 , 2.2) elektrisch leitend und der Zellgehäuserahmen (2.3) elektrisch isolierend ausgebildet sind.16. Battery (B) according to claim 1, characterized in that the cell housing side walls (2.1, 2.2) are electrically conductive and the cell housing frame (2.3) are electrically insulating.
17. Batterie (B) nach Anspruch 11 , dadurch gekennzeichnet, dass die Polkontakte (7) jeweils einer Polarität (+, -) mit jeweils einer Zellgehäuseseitenwand (2.1 , 2.2) elektrisch leitend verbunden sind und dass die betreffenden beiden Zellgehäuseseitenwände (2.1 , 2.2) unterschiedlicher Polarität (+, -) mittels des Zellgehäuserahmens (2.3) elektrisch voneinander isoliert sind.17. Battery (B) according to claim 11, characterized in that the pole contacts (7) in each case one polarity (+, -) with one cell housing side wall (2.1, 2.2) are electrically connected and that the respective two cell housing side walls (2.1, 2.2 ) of different polarity (+, -) are electrically isolated from each other by means of the cell housing frame (2.3).
18. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass die Zellgehäuseseitenwände (2.1 , 2.2) als Flachseiten ausgeführt sind. 18. Battery (B) according to claim 1, characterized in that the cell housing side walls (2.1, 2.2) are designed as flat sides.
19. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass an einer Zellgehäuseseitenwand (2.2) einer ersten Einzelzelle (E1) und einer Zellgehäuseseitenwand (2.1) einer letzten Einzelzelle (E2) des Zellverbundes (Z) zumindest jeweils ein elektrisches Anschlusselement (9, 10) angeordnet ist.19. Battery (B) according to claim 1, characterized in that on a cell housing side wall (2.2) of a first single cell (E1) and a cell housing side wall (2.1) of a last single cell (E2) of the cell assembly (Z) at least one electrical connection element (9 , 10) is arranged.
20. Batterie (B) nach Anspruch 10, dadurch gekennzeichnet, dass der Zellgehäuserahmen (2.3) zwei elektrisch voneinander isolierte und voneinander beabstandete Materialrücknahmen (2.33, 2.34) aufweist, in denen die Polkontakte (7) jeweils einer Polarität (+, -) angeordnet sind, wobei die in Richtung der Stapelung der Elektrodenfolien (5) gemessene lichte Höhe (h) einer Materialrücknahme (2.33, 2.34) kleiner oder gleich der entsprechenden Erstreckung der unbeeinflusst übereinander gestapelten zugehörigen Polkontakte (7) ist und deren parallel zur Flachseite einer Elektrodenfolie (5) gemessene Tiefe (t) größer oder gleich der entsprechenden Erstreckung der zugehörigen Polkontakte (7) ist.20. Battery (B) according to claim 10, characterized in that the cell housing frame (2.3) has two electrically isolated from each other and spaced apart material returns (2.33, 2.34), in which the pole contacts (7) each one polarity (+, -) wherein the height (h) of a material return (2.33, 2.34) measured in the direction of the stacking of the electrode films (5) is less than or equal to the corresponding extent of the associated pole contacts (7), which are not influenced one above the other and parallel to the flat side of an electrode film ( 5) measured depth (t) is greater than or equal to the corresponding extent of the associated pole contacts (7).
21. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass eine Wärmeleitplatte (8) zur Kühlung der Batterie (B) vorgesehen ist.21. Battery (B) according to claim 1, characterized in that a heat-conducting plate (8) for cooling the battery (B) is provided.
22. Batterie (B) nach Anspruch 21 , dadurch gekennzeichnet, dass zwischen der Wärmeleitplatte (8) und dem Zellverbund (Z) ein wärmeleitfähiges Material eingebracht ist.22. Battery (B) according to claim 21, characterized in that between the heat conducting plate (8) and the cell assembly (Z), a thermally conductive material is introduced.
23. Batterie (B) nach Anspruch 22, dadurch gekennzeichnet, dass das wärmeleitfähige Material eine Vergussmasse, ein Lack und/oder eine Wärmeleitfolie (11) ist.23. Battery (B) according to claim 22, characterized in that the thermally conductive material is a potting compound, a lacquer and / or a heat conducting film (11).
24. Batterie (B) nach Anspruch 1 , dadurch gekennzeichnet, dass der Zellverbund (Z) und eine Wärmeleitplatte (8) in einem Gehäuserahmen angeordnet sind. 24. Battery (B) according to claim 1, characterized in that the cell assembly (Z) and a heat conducting plate (8) are arranged in a housing frame.
25. Batterie (B) nach Anspruch 24, dadurch gekennzeichnet, dass der Gehäuserahmen aus zumindest einem den Zellverbund (Z) und die Wärmeleitplatte (8) vollständig umschließenden Spannelement (12), insbesondere einem Spannband oder einem Spannrahmen, gebildet ist. 25. Battery (B) according to claim 24, characterized in that the housing frame of at least one cell composite (Z) and the heat conducting plate (8) completely enclosing clamping element (12), in particular a clamping band or a clamping frame is formed.
EP20090713075 2008-02-23 2009-02-19 Battery comprising a plurality of individual cells Not-in-force EP2243178B1 (en)

Applications Claiming Priority (2)

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DE200810010828 DE102008010828A1 (en) 2008-02-23 2008-02-23 Battery with several single cells
PCT/EP2009/001179 WO2009103527A1 (en) 2008-02-23 2009-02-19 Battery comprising a plurality of individual cells

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EP2243178A1 true EP2243178A1 (en) 2010-10-27
EP2243178B1 EP2243178B1 (en) 2013-04-10

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US (1) US8871377B2 (en)
EP (1) EP2243178B1 (en)
JP (1) JP5502760B2 (en)
CN (1) CN101946342B (en)
DE (1) DE102008010828A1 (en)
WO (1) WO2009103527A1 (en)

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JP5502760B2 (en) 2014-05-28
CN101946342B (en) 2013-06-05
WO2009103527A1 (en) 2009-08-27
US20110033736A1 (en) 2011-02-10
EP2243178B1 (en) 2013-04-10
JP2011512633A (en) 2011-04-21
US8871377B2 (en) 2014-10-28
DE102008010828A1 (en) 2009-08-27
CN101946342A (en) 2011-01-12

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